單項選擇題設(shè)x=12、y=12345,執(zhí)行語句printf(“%4d,%4d”,x,y);的輸出結(jié)果是()。
A.12,123
B.12,1234
C.12,12345
D.12,123456
A.12,123
B.12,1234
C.12,12345
D.12,123456